EP 4116058 B1 20240313 - FOAMING AND SHAPING PROCESS FOR A THERMOPLASTIC SHEET, AND ASSOCIATED APPARATUS AND SHAPED FOAMED THERMOPLASTIC SHEET
Title (en)
FOAMING AND SHAPING PROCESS FOR A THERMOPLASTIC SHEET, AND ASSOCIATED APPARATUS AND SHAPED FOAMED THERMOPLASTIC SHEET
Title (de)
VERFAHREN ZUM SCHÄUMEN UND FORMEN EINER THERMOPLASTISCHEN PLATTE UND ZUGEHÖRIGE VORRICHTUNG UND GEFORMTE GESCHÄUMTE THERMOPLASTISCHE PLATTE
Title (fr)
PROCÉDÉ DE MOUSSAGE ET DE FAÇONNAGE D'UNE FEUILLE THERMOPLASTIQUE ET APPAREIL ASSOCIÉ ET FEUILLE THERMOPLASTIQUE MOUSSÉE FAÇONNÉE
Publication
Application
Priority
EP 21184715 A 20210709
Abstract (en)
[origin: EP4116058A1] A method of foaming and shaping a thermoplastic sheet comprising a poly(phenylene ether), a polyetherimide, or a combination thereof includes foaming the thermoplastic sheet with supercritical carbon dioxide to form a foamed thermoplastic sheet, and shaping the foamed thermoplastic sheet to form a shaped foamed thermoplastic sheet. The shaping step includes compressing the foamed thermoplastic sheet between a first metal plate and a second metal plate, each of which has a grooved surface facing the thermoplastic sheet. The first metal plate and the second metal plate are connected by a flexible, compressible linkage capable. When the flexible, compressible linkage is in its uncompressed state, only the second (lower) metal plate is in contact with the shaped foamed thermoplastic sheet. When the flexible, compressible linkage is in its compressed state, both the first (upper) and second (lower) metal plates are in contact with the shaped foamed thermoplastic sheet.
IPC 8 full level
B29C 44/34 (2006.01); B29C 43/02 (2006.01); B29C 43/32 (2006.01); B29C 44/56 (2006.01); C08J 9/12 (2006.01); C08J 9/36 (2006.01); B29C 43/58 (2006.01)
CPC (source: EP KR)
B29C 33/424 (2013.01 - KR); B29C 43/021 (2013.01 - EP KR); B29C 43/32 (2013.01 - EP KR); B29C 43/36 (2013.01 - KR); B29C 43/58 (2013.01 - EP KR); B29C 44/3453 (2013.01 - EP KR); B29C 44/56 (2013.01 - EP); B29C 44/5627 (2013.01 - EP KR); B29C 44/5636 (2013.01 - EP KR); B29D 7/01 (2013.01 - KR); C08J 9/12 (2013.01 - KR); C08J 9/122 (2013.01 - EP); C08J 9/36 (2013.01 - EP KR); B29C 2043/023 (2013.01 - EP KR); B29C 2043/3216 (2013.01 - EP KR); B29C 2043/3634 (2013.01 - KR); B29C 2043/5833 (2013.01 - EP KR); C08J 2201/032 (2013.01 - EP KR); C08J 2371/12 (2013.01 - EP KR); C08J 2379/08 (2013.01 - EP KR); C08J 2425/04 (2013.01 - EP KR); C08J 2453/02 (2013.01 - EP KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4116058 A1 20230111; EP 4116058 B1 20240313; CN 117615894 A 20240227; KR 20240001282 A 20240103; WO 2023281329 A1 20230112
DOCDB simple family (application)
EP 21184715 A 20210709; CN 202280048536 A 20220527; IB 2022055032 W 20220527; KR 20237043996 A 20220527